NOTE
Page 12, paragraph 13 b, line 4. Delete "TP3002"
New plates should be requisitioned for
Page 16, add paragraph 27.1 and figure 10.1
those tat sets that do not have plates
after paragraph 27.
described in (4) above
Paragraph 2 f, line 9. Change "22 volts" to:
21.5 volts.
27.1. Selector Switch Position 1.
(fig. 10.1)
Page 5, figure 2. Make the following changes:
When selector switch is in position 19, the +13.5
Change the resistance value of "R7612" and
(1)-volt dc output of module A2100 to relay
"R7613" to: 51 (ohms). Add the following:
K3001 in assembly A3000 can be tested. The
NOTE
tested voltage is connected through rf choke
In some units, the resistance value of
L7301 and voltage dropping resistors R7919 and
R7612 is 75 ohms and R7613 is 33 ohms.
R7920 to the voltage supply limits sensing circuit.
The output of this circuit is applied to the Schmitt
Page 11, figure 8. Make the following changes.
trigger circuit. If the voltage is within limits,
Change the resistance values of "R7818" to
GREEN indicator lamp DS7092 lights. If the volt-
"51 (ohms) " and "R7819" to "8.2K"
age is not within limits, insufficient voltage will
Add the following:
be applied to the Schmitt trigger circuit, and RED
NOTE
indicator lamp DS7901 lights. The operating volt-
In some units, the resistance value of
age for the Schmitt trigger is supplied from the
R7818 is lK and R7819 is lK.
+16-volt dc line.
Figure 10.1. Test in selector switch position 19, simplified schematic diagram
replace the affected assembly. (Repair
Page 19, paragraph 33 d. Add the following
parts for assemblies are not provided.)
note below the heading:
NOTE
Page 23. Delete figure 11 and substitute new
If a component is detected as defec-
figure 11.
tive in assemblies A7300 through A7800,
2
